Supporting-stand and mold for making building-blocks.



No. 729,887. PATENTED JUNE 2, 1903. L. P. NORMANDIN.

SUPPORTING STAND AND MOLD FOR MAKING BUILDING BLOCKS.

APPLIOATION FILED FEB. 2. 1903.

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m: NURRXS PETERS cc PHOTOLII'HO. WASHINGTON. o (H PATENTED JUNE 2, 1903.

, L. P. NORMANDINE SUPPORTING STAND 'AND'MOLD FOR MAKING BUILDING BLOCKS.

APPLICATION FILED FEB. 2, 1903.

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UNITE STATES Iatented jufie' 2, 1903.

PATENT OFFIcE.

LEVI P. NORMANDIN, OF JACKSON, MICHIGAN} SUPPORTlNG-STAND AN D MOLDFOR MAK-iNG BUiLDlNG-BLOCKSi SPECIFICATION forming part of Letters Patent No; 729,887, dated @116 2, 1903. Application filed February 2,.1903. Serial No. 141,43 7. (No model.)

Blocks, of which thefollowin'g'is a'specification, reference beinghad therein to the accompanying drawings. I

This invention relates to moldsfor making building-blocks of cement, concrete, (to. and it consists in providinga mold with a movable bottom and sides and ends-which may be loosened to free the building-block when in its plastic state.

The invention further consists iii-providing a work stand or bench therefor and means for supporting the cores in molding hollow building-blocks and in the means for drawing the cores from the molds, and consists,further,

in the peculiar construction, arrangement, and combination of parts, all as more fully hereinafter described, and shown in the accompanying drawings, in which- Figure 1 is a side elevation of the supporting-stand, mold cores for the mold, and means for forcing the mold from the cores. Fig. 2 is a perspective view of the mold, showing in dotted lines the detachable side and end eXtensionsi'or. molding curved blocks. Fig. 3 is a'bottom plan view, of the mold; Fig. 4, a section=on the line 2 a, Fig. 3; @Fig. 5, a similar section showing method of empty ing mold; Fig. 6, a .plan view of the double camfor clamping the mold together; Fig. 7, a vertical section through a mold complete for hexagonal or octagonal blocks. Fig. 8 is a section through the-mold, core, and supporting-stand; Fig. 9, aside elevation ofthe cutout extension used to permit the ins'ertionof the cores in molding hollow blocks; Fig-10, a perspective view of one of the wedge-blocks for squaring the end of a mold when curved or hexagonal blocks are made.

As shown in the drawings, thesupportingstand or work-bench is adapted to be moved where the building is to be put up and comprises the four cornerap'osts A, horizontal members 13','and end'uprights '0, (provided with vertical slots,) to which the transverse bar D, carrying the tapering cores E, is vertiand the otherthe side and'end M N-the wallsof each member being rigidly secured together at diametrically opposing corners of the. mold by the screws 0 and the members adjustably secured together at the other corners of themold by the double-acting cams P, pivotally mounted on theears-Q, extendingthrough apertures in the side of the mold, and R represents ears integrally formed with the side of the casing and provided with an adjusting-screw S, forming a variable stop acting against the inclined side of the cam P, so that when the cam is depressed it will tend to force the ends of the mold together, as well as the sides, and vice versa, in releasing the mold to free the block.

T is an annular ledge or shoulder forming an abutment all around the inside lower edge of the mold and rigidly secured to the side and end M N of the mold by screws U and at its opposite side K, andend L is provided with lugs andnotches V W, cooperating with lugs and notches- V W in the sideande'nd of the mold, so that the side and end walls K 'L will have a limited play or lost motion when the cams are released to free the block. The annular ledge T is beveled oflifat the top, as'shown in Figs. etand 7, to prevent any material from lodging thereon.

T represents arched'transverse connectingloars' integrally formed with the ledge T.

X is the removable top of the mold, adapted of the mold for lifting the same, and Z are handles at right angles for turning the same.

In Fig. 2 I have shown curved detachable extensions to be used in molding curved blocks, in which case a bottom and top curved to the corresponding are is substituted in place of the straight ones.

In Fig. 7 I'have shown a mold for molding obtuse-angled blocks for bay-windows, &c., in which case but one end of the mold is found necessary to be extended up, and a wedge-block Y is provided, as shown in Fig. 10, to make a square corner for the joint, a similar block being used at each end of the curved block, and where the end of a square block is exposed the end of the block may be finished by inserting a plate of the desired configuration in the end of the mold, which can be removed after the block is discharged from the mold.

\Vhere the molds are excessively high in molding large blocks, I may use another set of cams above the first to prevent the sides from springing, and instead of using the extension-pieces I may form them integral with the sides and ends.

In molding veneer blocks I also provide adjusting-screws P in the sides of the mold for making countersinks in the block for the heads of the holding-nails to lie in, similar screws also being used to hold the wedgeblocks in place, as shown in Fig. 2.

Having thus fully described the device, it is intended to operate as follows: The mold is placed on the members B, as shown in dotted lines in Fig. 1, position 1, and the material tamped in the cover is then put in place and the clamping-dogs X to hold the same in place while being turned bottom side up. The operators, one at each end, then lift the mold by the handles Z and turn it by the handles Z upside down into the position 2, Fig. 1, when the clamping-dogs are removed, the double-acting cams P released, and the side and end walls of the mold freed from contact with the block. The mold is then carefully lifted, and, as the bottom is loose, it follows the block out of the mold, thus insuring a clear-cut sharp edge, as shown in Fig. 5.

Having thus fully described myinvention, what I claim is- 1. A mold consisting of two members each forming a side and an end wall of the mold and having a limited movement relative to the other, an annular abutment secured to one of said members, and a movable bottom supported by said abutment.

2. Amold consisting of two members movable relatively to each other and forming the walls of the mold, an annular abutment secured to one of said members near the lower side of the wall and provided with transverse bars having openings, a movable bottom, and guide-pins on said bottom to engage the openings in said bars.

3. A mold consisting of two members each forming a side and an end wall of the mold, said side walls being each. formed with an aperture, ears on the end walls to project through said apertures, and cams pivotally secured to said ears to engage the side walls.

4. A mold formed of two members each consisting of a side and an end wall secured together to form a corner of the mold and each formed with an aperture, an car on each side wall adjacent to said apertures,an ear on each end wall to project through said apertures, adj ustable stops on the ears on the side walls, and cams pivotally secured to said ears on the end i *alls and having cam-faces to engage the stops and the side walls.

5. A mold consisting of two members each forming a side and an end wall of the mold and one of said members formed with notches at its lower edge, means 'for uniting said members, an annular abutment secured at one side to one of said members and at its opposite side is provided with lugs to engage the notches in the other member, and a movable bottom supported by said abutment.

6. Amold consisting of two members each forming a side and an end wall of the mold and one of said members being provided with notches in the lower edge of its walls, inwardly-extending lugs on the member having the notched edge; an annular abutment secured at one side to one of the members provided with notches at its opposite side to receive the lugs on the other member, lugs on the abutment to loosely engage the notches in the adjacent member, arched cross-bars connecting the sides of the annular abutment and having openings, a movable bottom supported by said abutment, guide-pins on said bottom extending through said openings in the cross-bars, stops on the outer ends of said pins, and means for loosely connecting the said members and for clamping the same together.

7. A mold having side and end walls secured together at two opposite corners of the mold and forming two members, means for uniting said members at the other corners of the mold, side extensions curved at their upper sides and detachably secured to the side walls of the mold, end extensions detachably secured to the end walls of the mold, a curved movable bottom, and a wedge-block to form the end of the molded article.

8. In a machine for molding buildingblocks, the combination with a supportingstand; of uprights near one end of said stand, a mold having openings in its side Wall adjacent to said uprights, a series of core-blocks adjustably secured to the uprights and adapted to project into the mold I stand; of uprights on said stand provided with slots, a cross-bar provided with slots, bolts passing through the slots in the uprights to adjustably secure the cross-bar 5 thereto, tapering core-blocks adjustably secured to said cross-bar by bolts passing through the slots in said bar, a mold supported by the stand adjacent to the uprights and beneath the core-blocks, side and end 10 extensions detachably secured to the walls 

